Air Filter Subscription: Home Air Filter Delivery on Your Schedule

Author: Michelle Wan, Brand Manager and Air Quality Writer  |  Reviewer: David Clark, Licensed HVAC Technician, Filterbuy HVAC Solutions  |  Updated: September 24, 2026

TL;DR

An air filter subscription sends replacement HVAC filters to your door automatically, every 30, 60, or 90 days, so there's always a clean one waiting. Filterbuy cuts, pleats, and frames every filter to order in our own US plants, in 600+ sizes and custom cuts. Subscribers save 5% on every order, delivery is fast and free to most US states, and you can cancel anytime.

What Is An Air Filter Subscription?

An air filter subscription is an automatic delivery service that sends replacement furnace, AC, or HVAC filters to your home on a schedule you set. You pick the size, the MERV rating, and the frequency once. After that, filters show up before each change is due, which handles the two things people actually forget: the date, and what size they need.

Filterbuy calls it auto-delivery. You'll see the same service called automatic air filter delivery, auto-ship, a filter replacement subscription, or a filter delivery program. They all mean the same thing: filters sent to you at a set interval.

Key Takeaways

• A Filterbuy air filter subscription starts at $7.91 per filter delivered for a 20x25x1 MERV 8 six-pack, with the 5% subscription discount applied.

• We cut, pleat, and frame every filter to order in our own US plants and ship it within 24 hours.

• Delivery runs every 30, 60, or 90 days. Most homes do well on 90 days, and homes with pets tend to pick 60.

• There are 600+ standard sizes, plus custom filters cut to the eighth of an inch if yours isn’t listed.

• No membership fee, no minimum order, no cancellation fee.

How Do Air Filter Subscriptions Work?

It works in four simple steps: pick your filter, set how often you want it, let the deliveries run, and change the schedule whenever your household changes. 

Each Filterbuy filter is made after you order it and ships within 24 hours, and you'll get a reminder three days before every shipment.

1. Find your size. It's printed right on the frame of the filter you've got now, so most people find it in about ten seconds. Couldn’t find a filter in there? Measure the slot instead. If your size isn't one of our 600+, we'll cut a custom filter to the eighth of an inch. Count your return vents while you're at it, since plenty of homes have more than one.

2. Pick your MERV rating. MERV is the scale that tells you how much a filter captures. There’s a chart further down, and it takes about a minute.

3. Set your frequency. Every 30, 60, or 90 days, and you can change it anytime from your Filterbuy account.

4. Adjust or cancel whenever. Speed it up, slow it down, skip a shipment, or cancel in a few clicks. No fees.
   

One thing worth knowing about sizing: the number on the frame is the nominal size, and the filter itself is cut slightly smaller. That clearance is deliberate. It's what lets the filter slide into the rack. Order by the printed number, and if you'd rather measure, here's how to measure an air filter.

What Are The Benefits Of An Air Filter Subscription?

The main benefits are on-time changes, lower heating and cooling costs, and less strain on your system. Almost nobody skips a filter change on purpose. A smoke alarm chirps and a lightbulb burns out, but a dirty filter gives you no signal at all. It just sits there.

• The change actually happens. The subscription handles the part people forget.

• Lower energy bills. The US Department of Energy says swapping a clogged filter for a clean one can cut an air conditioner’s energy use by 5 to 15 percent.

• Less strain on the system. A loaded filter makes the blower work harder to move the same air.

• One less errand. No hardware-store trip, and no guessing at the size in the aisle.

Supporting Statistics: What The Research Shows

Two independent US sources back the schedule Filterbuy built its delivery service around: the federal ENERGY STAR program and the US Energy Information Administration. Between them they show how much of a home’s energy is at stake and how many households this applies to. Each figure links to its source.

1. Heating and cooling is nearly half your home’s energy use

Source: ENERGY STAR, the joint US EPA and Department of Energy program.

• Nearly half a home’s energy goes to heating and cooling.

• The guidance is to check your filter monthly and change it at least every three months.

• A dirty filter slows airflow and lets dust build up inside the equipment, which leads to expensive maintenance or early failure.

What it means: our default 90-day schedule matches that federal guidance. Pets or heavy dust move you to 60 or 30.

2. Nearly nine in ten US homes run air conditioning

Source: US Energy Information Administration, 2020 Residential Energy Consumption Survey.

• 88% of US households use air conditioning.

• Two-thirds use central AC or a central heat pump.

• Sample: 18,496 households.

What it means: central systems are the norm, and every one of them runs on a filter that has to be replaced.

How Much Does An Air Filter Subscription Cost?

A Filterbuy subscription costs $9.49 per filter for a standard 20x25x1 MERV 11 in a six-pack, with the 5% subscription discount applied. MERV 8 is $7.91 and MERV 13 is $11.08. There’s no membership fee and no minimum. We can publish exact prices because we sell direct, so there’s no distributor margin in the way.

Prices for the 20x25x1 size, verified on filterbuy.com in August 2026. Subscription price reflects the 5% auto-delivery discount. Buying 12 or more drops MERV 8 to $6.66 per filter before the subscription discount.

What Is The Cheapest Air Filter Subscription?

A three-filter home on a 90-day Filterbuy schedule spends about $95 a year on MERV 8, or $114 on MERV 11. That’s twelve filters, delivered. With pets on a 60-day cycle it’s closer to $171. The bigger lever, though, is pack size:

• One 20x25x1 MERV 8 filter costs $27.99.

• The same filter in a four-pack: $9.49 each.

• In a six-pack: $8.33. At twelve or more: $6.66.

That’s a 76% swing on an identical filter, and most of the drop has already happened by the four-pack. So compare plans on what you’ll spend in a year, and there’s more of the math in our guide to affordable air filter subscription plans.

When A Subscription Isn’t The Right Call

If it isn’t right for your setup, don’t buy it. Three cases where we’d tell you to skip it:

• You use 4- or 5-inch filters. Those often run 6 to 12 months, so one or two deliveries a year is really a reminder.

• You don’t know your equipment yet. In a new place or a rental, measure and order once, then set a schedule when you know what the system takes.

• You already buy in bulk once a year. If a twelve-pack lasts you two years, the extra 5% isn’t worth managing a schedule for.

What Makes The Best Air Filter Subscription Service?

A good air filter subscription carries your exact size, arrives on schedule, costs less than a store run, and lets you cancel easily. The clearest difference between services is where the filter comes from. Most are logistics companies shipping stock they bought in; we make ours.

Filterbuy prices are for the 20x25x1 size on subscription, verified August 2026. Competitor figures are from public sources, verified August 2026. Second Nature was formerly known as FilterEasy.

Furnace, AC, And HVAC Filter Replacement: One Subscription

A furnace filter, an AC filter, and an HVAC filter are the same filter doing the same job. Only the season changes what you call it. One Filterbuy air filter replacement subscription covers all three.

• Furnace filter subscription: on-time furnace filter replacement all winter.

• AC filter auto-delivery: a clean filter through the cooling season.

• HVAC filter replacement service: set it once, year-round.

Most systems do well on a fresh filter every 90 days, or 60 with pets. After that it runs on autopilot.

Which MERV Rating Should You Choose?

MERV, or Minimum Efficiency Reporting Value, is the industry scale for how much a filter captures. Filterbuy makes four options, and the chart below shows what each one is and who it’s for.

MPR and FPR are third-party rating systems, not Filterbuy’s. Check your HVAC manual for compatibility, the same way you would confirm the size.

Picking a tier

• MERV 8 is the standard choice for most homes.

• MERV 11 is our Allergy Sufferers tier, and it’s the one people with pets or pollen tend to pick.

• MERV 13 is our Optimal tier, and it’s the one to pick for smoke.

• Odor Eliminator uses activated carbon and is built for odors.

Check your HVAC manual for compatibility before you choose a tier, the same way you’d confirm the size. If you want to compare the tiers side by side, there’s more in our MERV rating chart. For anything about your own health, talk to a doctor.

Shipping And Delivery

Filterbuy offers fast, free 2-day delivery to most US states, shipped from our own US plants. Your filters are made after you order them, so what turns up was built for your system. Breathe easy.

Not sure how high to go on the chart? Check the live air quality index in your area first.

Glossary

Air filter subscription: A recurring order that sends fresh HVAC filters on a schedule you choose.

MERV: Minimum Efficiency Reporting Value, the industry scale for how much a filter captures.

MPR and FPR: Two third-party rating systems some retailers use alongside MERV. They are not Filterbuy’s.

Pleated filter: Folded media with far more surface area than flat fiberglass, so it captures more and lasts longer.

Nominal size: The size printed on the frame, which is the one you order by. The filter is cut slightly smaller so it slides into the rack.

Custom air filter: A filter cut to a size we don’t stock, made to the eighth of an inch.

Related reading

• How often to change an HVAC filter

• MERV rating chart

• How to measure an air filter

• Affordable air filter subscription plans

Find Your Filter Match, the live Filterbuy sizing quiz.